128133228 has 12 divisors (see below), whose sum is σ = 298977560. Its totient is φ = 42711072.

The previous prime is 128133227. The next prime is 128133251. The reversal of 128133228 is 822331821.

It is a tau number, because it is divible by the number of its divisors (12).

It is a junction number, because it is equal to n+sod(n) for n = 128133195 and 128133204.

It is not an unprimeable number, because it can be changed into a prime (128133227) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5338873 + ... + 5338896.

Almost surely, 2^128133228 is an apocalyptic number.

It is an amenable number.

128133228 is an abundant number, since it is smaller than the sum of its proper divisors (170844332).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

128133228 is a wasteful number, since it uses less digits than its factorization.

128133228 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10677776 (or 10677774 counting only the distinct ones).

The product of its digits is 4608, while the sum is 30.

The square root of 128133228 is about 11319.5948690755. The cubic root of 128133228 is about 504.1432101223.

The spelling of 128133228 in words is "one hundred twenty-eight million, one hundred thirty-three thousand, two hundred twenty-eight".